Cost Comparison: LED spotlight versus Halogen spotlight - TheGreenAge
TORCHSTAR 12-Pack MR16 LED Light Bulb, Dimmable Spotlight Bulb 50W Equivalent, GU5.3 Bi-Pin Base, UL & Energy Star Listed, 7W, 490lm, 12V, 3000K Warm White, for Recessed Lighting & Track Light Head -
LED Light Bulb types - Selecting the correct socket type for your LED bulb
Intro to LED Light Bulbs: Part 7: Identifying Bulb Types - YouTube
WiFi Smar Indoor Spot Light 85-265V A60 A70 A80 High Power CE RoHS Aluminum LED Lamp LED Light LED Lighting Bulb 5W 7W 9W 12W 15W 18W LED Bulb - China LED
Light Bulb Identifier and Finder Guide - Ideas & Advice | Lamps Plus